/*
 * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.examples.bpmn.usertask.taskcandidate;

import static java.util.Arrays.asList;
import static java.util.Collections.singletonMap;
import static org.assertj.core.api.Assertions.assertThat;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.engine.impl.test.PluggableActivitiTestCase;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.Deployment;

/**
 */
public class TaskCandidateTest extends PluggableActivitiTestCase {

    private static final String KERMIT = "kermit";
    private static final List<String> KERMITSGROUPS = asList("accountancy");

    private static final String GONZO = "gonzo";
    private static final List<String> GONZOSGROUPS = asList("management", "accountancy", "sales");

    @Deployment
    public void testSingleCandidateGroup() {
        // Deploy and start process
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("singleCandidateGroup");

        // Task should not yet be assigned to kermit
        List<Task> tasks = taskService.createTaskQuery().taskAssignee(KERMIT).list();
        assertThat(tasks.isEmpty()).isTrue();

        // The task should be visible in the candidate task list
        tasks = taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list();
        assertThat(tasks).hasSize(1);
        Task task = tasks.get(0);
        assertThat(task.getName()).isEqualTo("Pay out expenses");

        // Claim the task
        taskService.claim(task.getId(), KERMIT);

        // The task must now be gone from the candidate task list
        tasks = taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list();
        assertThat(tasks.isEmpty()).isTrue();

        // The task will be visible on the personal task list
        tasks = taskService.createTaskQuery().taskAssignee(KERMIT).list();
        assertThat(tasks).hasSize(1);
        task = tasks.get(0);
        assertThat(task.getName()).isEqualTo("Pay out expenses");

        // Completing the task ends the process
        taskService.complete(task.getId());

        assertProcessEnded(processInstance.getId());
    }

    @Deployment
    public void testMultipleCandidateGroups() {
        // Deploy and start process
        ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("multipleCandidatesGroup");

        // Task should not yet be assigned to anyone
        List<Task> tasks = taskService.createTaskQuery().taskAssignee(KERMIT).list();

        assertThat(tasks.isEmpty()).isTrue();
        tasks = taskService.createTaskQuery().taskAssignee(GONZO).list();

        assertThat(tasks.isEmpty()).isTrue();

        // The task should be visible in the candidate task list of Gonzo and
        // Kermit
        // and anyone in the mgmt/accountancy group
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list()).hasSize(1);
        assertThat(taskService.createTaskQuery().taskCandidateUser(GONZO, GONZOSGROUPS).list()).hasSize(1);
        assertThat(taskService.createTaskQuery().taskCandidateGroup("management").count()).isEqualTo(1);
        assertThat(taskService.createTaskQuery().taskCandidateGroup("accountancy").count()).isEqualTo(1);
        assertThat(taskService.createTaskQuery().taskCandidateGroup("sales").count()).isEqualTo(0);

        // Gonzo claims the task
        tasks = taskService.createTaskQuery().taskCandidateUser(GONZO, GONZOSGROUPS).list();
        Task task = tasks.get(0);
        assertThat(task.getName()).isEqualTo("Approve expenses");
        taskService.claim(task.getId(), GONZO);

        // The task must now be gone from the candidate task lists
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list().isEmpty()).isTrue();
        assertThat(taskService.createTaskQuery().taskCandidateUser(GONZO, GONZOSGROUPS).list().isEmpty()).isTrue();
        assertThat(taskService.createTaskQuery().taskCandidateGroup("management").count()).isEqualTo(0);

        // The task will be visible on the personal task list of Gonzo
        assertThat(taskService.createTaskQuery().taskAssignee(GONZO).count()).isEqualTo(1);

        // But not on the personal task list of (for example) Kermit
        assertThat(taskService.createTaskQuery().taskAssignee(KERMIT).count()).isEqualTo(0);

        // Completing the task ends the process
        taskService.complete(task.getId());

        assertProcessEnded(processInstance.getId());
    }

    @Deployment
    public void testMultipleCandidateUsers() {
        runtimeService.startProcessInstanceByKey(
            "multipleCandidateUsersExample",
            singletonMap("Variable", (Object) "var")
        );

        assertThat(taskService.createTaskQuery().taskCandidateUser(GONZO, GONZOSGROUPS).list()).hasSize(1);
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list()).hasSize(1);

        List<Task> tasks = taskService.createTaskQuery().taskInvolvedUser(KERMIT).list();
        assertThat(tasks).hasSize(1);

        Task task = tasks.get(0);
        taskService.setVariableLocal(task.getId(), "taskVar", 123);
        tasks = taskService
            .createTaskQuery()
            .taskInvolvedUser(KERMIT)
            .includeProcessVariables()
            .includeTaskLocalVariables()
            .list();
        task = tasks.get(0);

        assertThat(task.getProcessVariables()).hasSize(1);
        assertThat(task.getTaskLocalVariables()).hasSize(1);
        taskService.addUserIdentityLink(task.getId(), GONZO, "test");

        tasks = taskService
            .createTaskQuery()
            .taskInvolvedUser(GONZO)
            .includeProcessVariables()
            .includeTaskLocalVariables()
            .list();
        assertThat(tasks).hasSize(1);
        assertThat(task.getProcessVariables()).hasSize(1);
        assertThat(task.getTaskLocalVariables()).hasSize(1);
    }

    @Deployment
    public void testMixedCandidateUserAndGroup() {
        runtimeService.startProcessInstanceByKey("mixedCandidateUserAndGroupExample");

        assertThat(taskService.createTaskQuery().taskCandidateUser(GONZO, GONZOSGROUPS).list()).hasSize(1);
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list()).hasSize(1);
    }

    // test if candidate group works with expression, when there is a function
    // with one parameter
    @Deployment
    public void testCandidateExpressionOneParam() {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("testBean", new TestBean());

        runtimeService.startProcessInstanceByKey("candidateWithExpression", params);
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).list()).hasSize(1);
    }

    // test if candidate group works with expression, when there is a function
    // with two parameters
    @Deployment
    public void testCandidateExpressionTwoParams() {
        Map<String, Object> params = new HashMap<String, Object>();
        params.put("testBean", new TestBean());

        runtimeService.startProcessInstanceByKey("candidateWithExpression", params);
        assertThat(taskService.createTaskQuery().taskCandidateUser(KERMIT, KERMITSGROUPS).count()).isEqualTo(1);
        assertThat(taskService.createTaskQuery().taskCandidateGroup("sales").count()).isEqualTo(1);
    }
}
